SHIMANO CN HG 6701 10 Speed Chain Dura Ace Ultegra 105 Bike Blvd 5 Pack of Shimano Dura Ace 10 Speed Chain Connecting Pins CN 7801 CN 6600 NEW Shimano Dura Ace 10 Speed Chain CN 7801 116 Link Bike ...

So when I was given the opportunity to “upgrade” my V3 to the new Shimano 105 Di2, how could I say “no”? Both Dura Ace and Ultegra have had Di2 versions going back to 10-speed days and I know a lot of ...